#1B5379#1B5379

#1B5379 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.5% C 0.085 H 242.6°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX#1B5379
RGBrgb(27, 83, 121)
HSLhsl(204, 64%, 29%)
HSVhsv(204, 78%, 47%)
CMYKcmyk(77.7%, 31.4%, 0%, 52.5%)
CIE-LABlab(33.56, -4.09, -26.75)
CIE-LCHlch(33.56, 27.06, 261.30°)
OKLaboklab(42.5% -0.0393 -0.0757)
OKLCHoklch(42.5% 0.085 242.6)
XYZxyz(6.9951, 7.7992, 19.2222)
Luminance0.0780 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5379 #79411B
analogous
#1B7970 #1B5379 #1B2479
triadic
#1B5379 #791B53 #53791B
tetradic
#1B5379 #701B79 #79411B #24791B
square
#1B5379 #701B79 #79411B #24791B
split-complementary
#1B5379 #791B24 #79701B
monochromatic
#061119 #103147 #1B5379 #2675AB #3B96D3

Accessibility & contrast

On white

8.20
#1B5379 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.56
#1B5379 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5379
8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5379#FFFFFF#000000##FFFFFF
##1B53791.008.202.568.20
#FFFFFF8.201.0021.001.00
#0000002.5621.001.0021.00
##FFFFFF8.201.0021.001.00

Color blindness preview

Protanopia (red-blind)
#41547B
Deuteranopia (green-blind)
#344B78
Tritanopia (blue-blind)
#005C60
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #1b5379;
/* rgb */ color: rgb(27, 83, 121);
/* oklch */ color: oklch(42.5% 0.085 242.6);
Tailwind
colors: {
  custom: {
    50: '#6683a0',
    500: '#1b5379',
    950: '#000000',
  },
}
SCSS
$custom: #1b5379;
$custom-light: #6683a0;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5379",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 121
  },
  "hsl": {
    "h": 204.255,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.42501,
    "c": 0.08529,
    "h": 242.6
  },
  "luminance": 0.078
}

Semantic roles & 50–950 ramp

primary
#1B5379
secondary
#AD6E43
accent
#8441E7
background
#F6F8F9
surface
#EBEFF2
border
#C6CACC
text
#060A0E
muted
#7A7C7E

Preview Lab

Preview with #1B5379

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →

#1B5379 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva